Improvement in spring-whiffletrees



UNITED STATES PATENT OEFIGE.

ALBERT ASSMANN, `0F LINDEN, ASSIGNOR TO HIMSELF AND MARTIN H. VOLKMANN,OF RAHWAY, NEW JERSEY. p

` IMPROVEMENT IN SPRING-WHIFFLETREES.`

Specification forming part of Letters Patent N o. 186,405, dated January23, 1877; application led l December 12, 1876.

To all lwhom t 'may concern :v

Be it known that I, ALBERT AssMANN, of Linden, in the county of Unionand State of New Jersey, have invented a new and useful Improvement inWhifdetrees, of which the following is a specification z Figures l and2v are plan views of my invention, showing it applied to one and twohorse vehicles respectively. Fig. 3 is an edge view of one of thewhiflietrees.

Similar letters of reference indicate corresponding parts in all thefigures.

This invention relates to an improvement in whifletrees and evener-bars5 and consists in making` the saine in two pieces, with a coiled springinterposed as a central connecting piece and support. This interposedspring renders the whiffletree or evener-bar elastic, and facilitatesthe starting of vehicles.` It also enables me to construct theWhiffletree or bar of shorter and less expensive piecespof wood thanwhen the same is made of one continuouslength.

A in the drawing represents my improved whiflietree. (Shown in Fig. 1 tobe applied to a Vone-horse vehicle.) It consists of two end pieces, aand b, of wood, and `of a central coiled spring, d,'whose ends are,respectively, fastened to the inner ends of the bars a, b.

The pin or bolt e, which secures this whiffletree to the vehicle, passesthrough the eye of lthe coil d. The draft, if applied to the ends may beapplied tothe evener-bar A", as shown in Fig. 2, or to the whiletreesthereon, or to both. The connecting-spring d I prefer to make double, asin Fig. 3 but it may also be made .single or in larger numbers in eachwhifetree.

l claim as my invention- A whiftletree composed of the end pieces a band middle piece c, the piece c being aspring by which the two endpieces c and b are connected, substantially 'as herein shown anddescribed.

ALBERT ASSMANN.

